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Disabling Copy/Paste in a Web Page

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心在旅途
心在旅途 2020-12-14 12:56

How Do I disable the copy paste feature in my webpage. To be precise, I don\'t want my users to copy any information from my website and use them for personal purposes. The

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  • 名媛妹妹
    2020-12-14 13:14

    I would suggest disabling right click.

    <script language="text/javascript">
    var message = "Not allowed."; 
    function rtclickcheck(keyp){ 
        if (navigator.appName == "Netscape" && keyp.which == 3){    
            alert(message); return false; 
        } 
        if (navigator.appVersion.indexOf("MSIE") != -1 && event.button == 2) {
            alert(message);     
            return false;
        }
    } 
    document.onmousedown = rtclickcheck;
</script>
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  • 误落风尘
    2020-12-14 13:16

    I don't want my users to copy any information from my website and use them for personal purposes

    There is no way to do this. If someone really wants your information, they can get it.

    You might be able to give them a litte bit of trouble with disabling certain functions using javascript or whatever...but you'll only give the people who don't know much about technology that trouble. And usually those people aren't even trying to copy your data. The one's who are, will figure out a way.

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  • 难免孤独
    2020-12-14 13:18

    You can't ever disable it.. users can view the source of your page so the text is always available. If you put click handlers to disable right-click, they can turn javascript off..

    The best you can try to do is make it inconvenient for people to deter them, but never can you prevent them.

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  • 无人及你
    2020-12-14 13:19

    By default, Chrome and Firefox block disabling the right click menu. You have to manually edit an entry in about:config in Firefox to prevent it being blocked, which is not something you can force your visitors to do.

    Regarding IE, you can modify your BODY tag like so:

    <body onContextMenu="return false">

    Which will prevent the right click context menu.

    Other than that, the next best step is to create an image of your text, place it in a .swf (flash) document, and point the page to load the .swf as the page. This will cause all browsers to display the flash context menu on right click, and will prevent simple copy/paste efforts.

    I do agree with previous replies, regardless of method used, any user can simply use their Print Screen key, paste the image in Paint (or other program), save it, and use OCR to grab your text.

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  • 再見小時候
    2020-12-14 13:20

    You need to rethink your strategy if you're resorting to these measures on the front end. What you are trying to do is inherently wrong.

    As a visitor to your web page, pulling something like this is just going to annoy me - I will eventually figure out what you've done and get around it. That said, I've recently found this particular method can be quite effective if you're aiming to restrict impatient or non-technical users. Proceed with caution...

    <div class="text">
  <p>Hello, world! Sadly, <a href="#">I won't work</a>.</p>
  <img alt="I can't be dragged or saved either :(" src="tree.png"> 
  <div class="preventSelect"></div>
</div>

    ...and the CSS:

    .text {
  position: relative;
  width: auto; /* can be fixed as well (ie 400px) */
  width: auto; /* can be fixed as well (ie 400px) */
  z-index: 0;
}

.preventSelect {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 1;
}

    The obvious drawback for this method is that the user cannot interact with anything inside the div we're preventSelecting. That includes links, buttons, images etc.

    Please don't use this unless you absolutely have to. Frankly, it's a pain in the ass for everyone.

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  • 再見小時候
    2020-12-14 13:22

    It is impossible to secure a website against copying. There are some technices to make it more difficult, but as soon as the user has the information on his screen its already too late. He could for example take a picture with a camera if the screenshot function could be disabled somehow.

    Disabling of javascript functionality (f.e. shortcuts) is not working in all browsers and the user may disable javascript.

    Using programs like curl all the information on the webpage can be grabbed.

    Best thing you could do is to put all the information you present into an image.

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